Add a new member in the pg_data_t struct to tell whether the node
corresponding to that pg_data_t is able to do hardware memory
encryption.
This will be read from sysfs.
Signed-off-by: Martin Fernandez <martin.fernandez@xxxxxxxxxxxxx>
---
include/linux/mmzone.h | 3 +++
mm/page_alloc.c | 1 +
2 files changed, 4 insertions(+)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 46ffab808f03..89054af9e599 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -886,6 +886,9 @@ typedef struct pglist_data {
struct task_struct *kcompactd;
bool proactive_compact_trigger;
#endif
+
+ bool crypto_capable;
+
/*
* This is a per-node reserve of pages that are not available
* to userspace allocations.
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0e42038382c1..a244151045b4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7699,6 +7699,7 @@ static void __init free_area_init_node(int nid)
pgdat->node_id = nid;
pgdat->node_start_pfn = start_pfn;
pgdat->per_cpu_nodestats = NULL;
+ pgdat->crypto_capable = memblock_node_is_crypto_capable(nid);
if (start_pfn != end_pfn) {
pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid,
--
2.30.2
